331421430 has 32 divisors (see below), whose sum is σ = 795938400. Its totient is φ = 88320512.

The previous prime is 331421423. The next prime is 331421471. The reversal of 331421430 is 34124133.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 331421397 and 331421406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61276 + ... + 66464.

It is an arithmetic number, because the mean of its divisors is an integer number (24873075).

Almost surely, 2^331421430 is an apocalyptic number.

331421430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

331421430 is an abundant number, since it is smaller than the sum of its proper divisors (464516970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331421430 is a wasteful number, since it uses less digits than its factorization.

331421430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7328.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 331421430 is about 18204.9836583283. The cubic root of 331421430 is about 692.0330920168.

Adding to 331421430 its reverse (34124133), we get a palindrome (365545563).

The spelling of 331421430 in words is "three hundred thirty-one million, four hundred twenty-one thousand, four hundred thirty".